Pump



Jan. 14, 1947. BQGQSLQWSKY 2,414,355

Filed Aug. 8, 1945 s Shats-Sheet 1 l V 2 Z I 3 m NTO Jan. 14, 1947.

B. BbsosLowsKY PUHP Filed Aug. 8, 1945 5 Sheets-Sheet 2 ATTORNEY Jan.14, 1947. I a. BOGOSLOWSKY 2, 1

PUHP

Filed Aug. 8, 1945 3 Sheets-Sheet 3 Patented Jan. 14, 1941 PUMP BorisBogoslowsky, Jackson Heights, N. Y., assignor to Homer W. Orvis, NewYork, N. Y.

' Application August 8, 1945. Serial No. 609,558 I Claims. l

This invention relates to pumps and pertains more particularly to pumpsof the type disclosed in my prior Patent No. 2,249,806, dated July 22,1941, in which a flexible tube is used to carry the fluid beingtransferred. Q

It is an object of the invention to'provide further improvements inpumps of this type.

A preferred embodiment of the invention selected for purposes ofillustration is shown in the accompanying drawings in which Fig. 1 is atop plan view. Fig. 2 is a section on the line 2-2 of Figure 1. Fig. 3is a section on the line 3-3 ofFigure 1. Fig. 4 is a section on the line4-4 of Figure 2. Fig. 5 is an exploded side elevation of a set of tubelocking members.

Fig. 6 is a section through one of said locking members.

Fig. 7 is a side elevation of a, length of tubing.

Fig. 8 is a similar view showing the tubing viewed as when wrappedaround a supporting member.

' shaft may pass, and having oppositely disposed pairs of arms l2, l2and I3, l3 in sliding engagement with guide brackets l4, l4 and l5, l5mounted on the stationary supporting member and on the movablesupporting member, respectively. The guide brackets I5, l5 permitrelative sliding motion between the floating member and the movablemember 4 in one direction only, i. e., horizontal motion, while theguide brackets I4, l4 permit relative sliding motion between thefloating member and the stationary supporting member in anotherdirection only, i. e., vertical motion. Thus, the movable member 4 ispositively restrained from rotation with respect to Referring to thedrawings the pump comprises direction parallel to the longitudinal axisof the 3 member I. I

The inner, movable supporting member 4 is of a smaller outside diameterthan the inside diameter of the stationary supporting member, therebyproviding a space therebetween for the reception of a length of tubing 5which is wrapped around the supporting member 4 in the mannerhereinafter described.

The movable supporting member 4 is mounted the stationary member.

The tubing 5 is wrapped around the movable supporting member 4,preferably in a series of tions l6, l6 projecting through the stationarysupporting member as shown in Figure: 1. The tubing is made of anysuitable flexible material, as for example rubber or polyvinyl alcohol,preferably molded to elliptical cross section as shown inFigures 3 and4, and having integral ribs 11, i1 extending lengthwise of the tubingand projecting in opposite'directions from opposite sides thereof.Preferably said ribs are bulbous to facilitate anchoring the wrappedportion of the tubing to the movable and stationary supporting membersas hereinafter described. A length of such tubing is shown in Figure 7,and in order to permit wrapping of the tubing around the movablesupporting member the ribs H, H are notched at intervals as shown at l8,[8' so that the tubing may be wrapped without undue distortion.

The opposite sides of the wrapped portion of the tubing are anchored tothe movable and stafor eccentric motion with respect to the station- 40tionary members, respectively, in order "that the ary supporting memberI, being carried on the shaft 6 having the eccentric portion I extendingthrough the member 4. The shaft is carried in bearings 8, 8' and, theeccentric-portion l is connected to the member 4 through bearings 9, 9'.

In the operation of the pump, it is important to preventrotation of themovable supporting tubing may bepositively expanded when opposedportions of the working surfaces of the supporting members move apart asthe eccentric motion takes place. In the embodiment illustrated thisanchoring is accomplished by the provision of two sets of lockingmembers, one set being mounted on and forming part of the movablesupportused for preventing such rotation be independentof the tubing, inorder that the tubing may be relieved of stresses to which it wouldotherwise be subjected. In the preferred embodiment illustrated. suchmeans comprise a floating member ing member, and the other set beingmounted on and forming part of the stationary supporting member. Onesuch set of locking members, adapted to be mounted on the movablesupporting member, is shown in Figure 5, and comprises three tubularsections 20, 2| and 22 each having spiral-end surfaces adapted tocooperate with ll, having a central aperture through which the a similaropposed spiral end surface of the next adjacent section. Each of saidspiral end surfaces is preferably grooved as shown at 23 of Figure 6 toengage the bulbous rib of the tubing. A similar set of locking members24. 25 and 26 of larger diameter are provided for the stationarysupporting member. Thus, when the locking members are assembled on thesupporting members with their spiral end surfaces engaging the bulbousribs of the tubing, they provide continuous grooves which anchor theopposite sides of the tubing along the entire length of the wrappedportion thereof. The locking members may be held in position by threadedrings 21, 28.

In operation, rotation of the shaft 6 produces eccentric motion of themovable member with respect to the stationary member so that the pointof closest approach between the working surfaces moves progressivelyalong the tubing thus forcing the fluid along the tubing. At the sametime the tubing is positively expanded at the opposite sideof the movingmember thus drawing fluid into the intake end of the tubing.

As is the case with the pump described in my prior Patent No. 2,249,806,this pump is .also simple and requires no valves, no packing, nointernal lubrication, and may be easily disassembled for inspection andrepair. The pump may also be used for both compression and for suction.Extremely high vacuums may be produced, if desired. The pump may also beused as a motor or as a meter if desired.

It will be understood that the invention may be said ribs, meansproviding spiral grooves in the i 4 tion or said tubing having integralribs extending lengthwise of said tubing and projecting outwardly fromopposite sides thereof, means Providing spiral grooves in th inner ofsaid supporting members for receiving and anchoring one of outer of saidsupporting members for receiving and anchoring the other of said ribs,and means for moving one of said supporting members eccentrically withrespect to the other.

3. A pump comprising two supporting members,.one of said supportingmembers being located within the other, and having .opposed spaced,parallel working surfaces, on of said supporting members being movablewith respect outwardly from opposit sides thereof, a series variouslymodified and embodied within the scope of the subjoined claims.

I claim as my invention:

1. A pump comprising two supporting members, one of said supportingmembers being located within the other, and having opposed spaced,

parallel working surfaces, one of said supporting members being movablewith respect to the other, a length of compressible tubing having afluid inlet at one end and a fluid outlet at the other end, a portion ofsaid tubing between said inlet and outlet being wrapped around the innerof said supporting members within the space between said workingsurfaces, means for anchoring one side of the wrapped portion of saidtubing to the inner of said supporting members, means for anchoring theopposite side of the wrapped portion of said tubing to the outer of saidsupporting members, and means for moving one of said supporting memberseccentrically with respect to the other, and means independent of saidtubing for positively preventing relative rotation between saidsupporting members.

2. A pump comprising two supporting members, 7

other end, a portion of said tubing between said inlet and outlet beingwrapped around the inner of said supporting members within the spacebetweensaid working surfaces, the wrapped porof spaced locking memberson the inner of said supporting members, each of said locking membershaving spiral end surfaces engaging and anchoring one of said ribs, 3,series of spaced locking members onthe outer of said-supporting members,each of said locking members having spiral end surfaces engaging andanchoring the other of said ribs, and means for moving one of saidsupporting members eccentrically with re; spect to the other.

4. A pump comprising two supporting members, on 'of said supportingmembers being located within the other, and having opposed spaced,parallel working surfaces, one of said supporting members being movablewith respect to the other, a length of compressible tubing having afluid inlet at one end and a fluid outlet at the other end, a portion ofsaid tubing between said inlet and outlet being wrapped around the innerof said supporting members within the space be-- tween said workingsurfaces, means formoving on of said members eccentrlcally with respectto the other, and means for preventing relative rotatiombetween saidsupporting members, said' and guides on the outer. of said supportingmembers engaging said floating member and permitting reciprocatingsliding motion therebetween in another direction at right anglesthereto.

. 5. In a pump, a compressible-tubing comprising a length of flexibletubular material having a substantially elliptical cross section, aportion of said tubing being'formedin a, series of spiral convolutions,said tubing having integral ribs extending lengthwise thereof, said ribsprojecting in opposite directions from opposite sides thereof.

soars nooosnowsxv.

